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| Titel |
Remote ENSO forcing versus local air-sea interaction in QTCM: a sensitivity study to intraseasonal variability |
| VerfasserIn |
D. Gushchina, B. Dewitte, S. Illig |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: 1st Alexander von Humboldt International Conference ; Nr. 6 (2006-03-30), S.289-297 |
| Datensatznummer |
250003271
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| Publikation (Nr.) |
 copernicus.org/adgeo-6-289-2006.pdf |
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| Zusammenfassung |
| The skill of a newly designed global atmospheric model of intermediate
complexity - QTCM (for quasi-equilibrium tropical circulation model) in
simulating the teleconnections is investigated. The role of the ENSO remote
forcing over the Pacific surrounding regions is emphasized from sensitivity
experiments to critical parameters of the model. The role of the tropical
intraseasonal variability (ITV) on the simulated ENSO teleconnection pattern
is estimated using the methodology proposed by Lin et al. (2000) allowing to
damp the energy of ITV in the model. The reduction of intraseasonal
variability allows emphasizing the forced response of the atmosphere and
eases the detection of local coupled atmosphere-ocean patterns. It was shown
that the simulated ITV has an impact on the ENSO teleconnection pattern both
in the mid-latitudes and in regions of ascending and descending branches of
Walker circulation cells in the tropics. |
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